LEGER SELWYN St. 301.246 SENTINEL Sentinel Practice Networks-Opportuni t ies and Limitations : Proceedings of the 3rd Hannover Sentinel Workshop held in Hannover. Germany, 1-2 March 1996 / eds. Selwyn St. Leger, Martin Schlaud, Friedrich Wilhelm Schwartz. - London : BMJ Publ. Group, 1998. - [2], 60 s. : wykr. ; 30 cm. - (Journal of Epidemiology and Community Health, ISSN ; vol.5 suppl.1)